How to adjust cms categories thumbnail to the scale size of the picture (photographer's website)

I would like to create a category overview like the one I drew in Figma (see pic). However, in webflow I can’t get it right.
Looking forward to read your suggestions/solutions…
Best, Joy

Here is my public share link: Webflow - Eric lowie
([how to access public share link][2])

[2]: 2021-01-25 122215

I think it’s solved, but not sure how I did it…